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MIDIJACK II: Hertz so good!

The Synhouse MIDIJACK II is an analog multimedia interface that can be installed in Hz/volt analog monosynths providing a MIDI input to control these popular pre-MIDI analog synthesizers from todays' personal computer sequencers, MIDI keyboards, or other MIDI controllers.

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The MIDIJACK II is designed to be compatible with the following Hz/volt analog monosynths:

Korg 770*
Korg 900-PS Preset*
Korg M-500 Micro Preset*
Korg M-500SP Micro Preset*
Korg Mini Korg
Korg MS-10 (may also use Original MIDIJACK)
Korg MS-20 (may also use Original MIDIJACK)
Korg MS-50 (may also use Original MIDIJACK)*
Korg Sigma**
Korg Synthe-Bass
Korg X-911**
    Moog Taurus I Bass Pedals
Paia 2720*
Paia 4700 Series*
Yamaha CS5**
Yamaha CS10**
Yamaha CS15**
Yamaha CS15D*
Yamaha CS20M*
Yamaha CS30*
Yamaha CS40M**

and many more!

* The MIDIJACK II is designed to be compatible with these machines but Synhouse has not yet had the opportunity to do a test installation on them. It may have been tested by someone in the field unknown to Synhouse.

** Has been installed in the field by at least a few customers without any reports of incompatibility, but this installation has not been done by Synhouse.

A complete list of the 11 functions of the MIDIJACK II:

The complete list of functions above is referred to as the complete list of functions because it is the complete list of functions.
This means that there are are no secret functions and if it is not in the list, it does not have that function.

The MIDIJACK II is for MIDI input only.

MIDIJACK II advantages:

The right features and latest technology

All user selections of MIDI channel, MIDI Off, MIDI On, single note triggering, and multiple note triggering are stored in nonvolatile flash memory, so your preferences will be remembered even with the power off! The Synhouse MIDIJACK II requires no batteries for this. Incorporating the latest advances in MCM (Multi-Chip Module) and VLSI (Very Large Scale Integration) technology, the MIDIJACK II matches the Original MIDIJACK as the world's smallest MIDI device. The Original MIDIJACK and MIDIJACK II utilize RISC processors and proprietary data processing architecture to make them the world's fastest MIDI processors.

How does it work?
Where Can I Buy It?
Since the introduction of MIDI, users have suffered from slow response time and "MIDI lag". For this reason, Synhouse has developed Accelerated MIDI for use in professional music applications. Accelerated MIDI utilizes a combination of digital sampling techniques and computerized numerical data filtering processes to separate critical MIDI data from unusable redundant MIDI data, process it, and implement it instantaneously. This creates a new type of MIDI processor that is dedicated to the specific applications of the Analog User, without ever allowing the CPU (Central Processing Unit) to be interrupted by useless data such as MIDI clocks and commands sent to other MIDI slave instruments on other MIDI channels. With the Original MIDIJACK and MIDIJACK II, the analog note sounds while the slow-moving MIDI message is still in the MIDI cable! This allows the analog synthesizer to instantly respond to the players note action, preserving the finest rhythmic nuances. No other brand of products has ever achieved this level of timing accuracy.

Built to last

The MIDIJACK is precision made from the finest materials, well exceeding the quality of the synthesizers it supports. With tough componentry such as a chrome steel DIN jack, thick FR4 fiberglass epoxy circuit board, machined aluminum iridite mounting brackets, black oxide steel hardware, and a button switch rated to withstand over 500,000 presses, the correctly installed MIDIJACK will go the distance.

Quick installation

Unlike MIDI retrofits made previously by other companies, the MIDIJACK is not a kit requiring assembly and does not take five hours of expert labor to install. The MIDIJACK is a fully assembled and tested microelectronic board that has a factory-made wiring harness with eight prepared, easy color-coded wire leads for simple user installation. It can be installed by anyone who can solder it to the right points. For convenience, Synhouse Factory Installation is available at Synhouse L.A. for most synths at the current pricing listed on the Factory Installation page. The MIDIJACK may also be installed by any service center familiar with analog synth repair, but third party installations are not supported by Synhouse. The average self-installation takes approximately one hour after reading the manuals. By comparison, it is simpler and quicker to install than an average automobile alarm system. The board mounts by drilling only four small holes for the screws, MIDI function button, and adjustment trimmer. All mounting hardware is included with purchase of the MIDIJACK, as well as 3 detailed installation and user manuals which describe the MIDIJACK theory and general installation method which will allow anyone to make their own installation in any compatible analog monosynth, providing that the user knows enough about the signal flow of the instrument to locate the proper cutting and connection points. Detailed instructions, diagrams, and photographs for selected popular synths can be found on this website under Analog User Modifications, but these are not necessary to perform this simple analog MIDI upgrade.

Synhouse Factory Installation


So tiny it fits anywhere     MIDIJACK icon

The MIDIJACK circuit board itself is only about the size of a single stick of chewing gum, less than 3" x 1". Having an extremely low profile, it can be fitted inside most analog synthesizers between the control panel and the circuit board behind it.


The MIDIJACK II Quick Installation Manual must be read fully and understood completely to qualify for warranty coverage and technical support. Although MIDIJACK technical support is a part of the warranty, every reasonable effort is made to provide information to customers after that period has expired. The MIDIJACK is warranted against defects in parts and manufacture for a period of 90 days from the date of purchase. Warranty covers a single synthesizer application and becomes void if in the opinion of Synhouse Multimedia Corporation the MIDIJACK has been subjected to unauthorized service, modification, or unintended installation or usage. No liability is assumed by Synhouse Multimedia Corporation for any loss or damage, direct or indirect, resulting from the use of or inability to use the MIDIJACK. More Terms and Conditions

Want to read all about it?

Read the Analog User Manual Online

Read the Quick Installation Manual Online

Read the Advanced Installation Manual Online

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